That's not a bad thought, but traditiona Mac keyboards didn't even have an "enter" key. (And nor do their current tenkeyless ones.) They just had a "return" key. The "enter" key only came around when the 10-key numpad was introduced, and it gave a different key code than the return key (which lives/lived where "enter" lives on PC keyboards).

I don't recall whether "enter" renamed files, and I can't check whether it does at the moment because all my mac keyboards within reach are tenkeyless, but "return" always has.